package org.testis.utils;

import java.io.*;


/**
 * Simple utilities to return the stack trace of an
 * exception as a String.
 */
public final class StackTraceUtil
{

    public static String getStackTrace(Throwable aThrowable)
    {
        final Writer result = new StringWriter();
        final PrintWriter printWriter = new PrintWriter(result);
        aThrowable.printStackTrace(printWriter);
        return result.toString();
    }


    /**
     * Defines a custom format for the stack trace as String.
     */
    public static String getCustomStackTrace(Throwable aThrowable)
    {
        //add the class name and any message passed to constructor
        final StringBuilder result = new StringBuilder("ERROR: ");
        result.append(aThrowable.toString());
        final String NEW_LINE = System.getProperty("line.separator");
        result.append(NEW_LINE);

        //add each element of the stack trace
        for (StackTraceElement element : aThrowable.getStackTrace()) {
            result.append(element);
            result.append(NEW_LINE);
        }
        return result.toString();
    }

} 
